In the real-time image processing system, SRIO was used to meet the demands of massive data interacting capacity between FPGA and DSP. This paper realized the massive image data transmission between FPGA and DSP with SRIO. The image sensor outputs image data in 4 channels and the clock in each channel is 175MHz, five times of input clock. Since the data channel is double data rate, so the data rate of one channel is 350Mbps, the data rate of the whole image sensor is 1400Mbps. FPGA receives the sampled data from image sensor and reorganizes the image data, and then transmits the organized data to camera link interface for display testing on the one hand; on the other hand, FPGA transmits the sorted data to DSP via SRIO for further process. The SRIO transmission between FPGA and DSP uses x1 mode, 8b/10b coding, and the transmission rate is 2.5Gbps per lane. The result shows that the image in camera link interface is fine and the SRIO transmission is successful.

In this paper, a multi-line interferogram stitching method based on orthogonal shear using the Wollaston prism(WP) was proposed with a 2D projection interferogram recorded through the rotation of CCD, making the spectral resolution of Fourier-Transform spectrometer(FTS) of a limited spatial size increase by at least three times. The fringes on multi-lines were linked with the pixels of equal optical path difference (OPD). Ideally, the error of sampled phase within one pixel was less than half the wavelength, ensuring consecutive values in the over-sampled dimension while aliasing in another. In the simulation, with the calibration of 1.064&mu;m, spectral lines at 1.31&mu;m and 1.56&mu;m of equal intensity were tested and observed. The result showed a bias of 0.13% at 1.31&mu;m and 1.15% at 1.56&mu;m in amplitude, and the FWHM at 1.31&mu;m reduced from 25nm to 8nm after the sample points increased from 320 to 960. In the comparison of reflectance spectrum of carnauba wax within near infrared(NIR) band, the absorption peak at 1.2&mu;m was more obvious and zoom of the band 1.38~1.43&mu;m closer to the reference, although some fluctuation was in the short-wavelength region arousing the spectral crosstalk. In conclusion, with orthogonal shear based on the rotation of the CCD relative to the axis of WP, the spectral resolution of static FTS was enhanced by the projection of fringes to the grid coordinates and stitching the interferograms into a larger OPD, which showed the advantages of cost and miniaturization in the space-constrained NIR applications.

Fourier transform infrared spectroscopy is an important technique in studying molecular energy levels, analyzing material compositions, and environmental pollutants detection. A novel rotational motion Fourier transform infrared spectrometer with high stability and ultra-rapid scanning characteristics is proposed in this paper. The basic principle, the optical path difference (OPD) calculations, and some tolerance analysis are elaborated. The OPD of this spectrometer is obtained by the continuously rotational motion of a pair of parallel mirrors instead of the translational motion in traditional Michelson interferometer. Because of the rotational motion, it avoids the tilt problems occurred in the translational motion Michelson interferometer. There is a cosine function relationship between the OPD and the rotating angle of the parallel mirrors. An optical model is setup in non-sequential mode of the ZEMAX software, and the interferogram of a monochromatic light is simulated using ray tracing method. The simulated interferogram is consistent with the theoretically calculated interferogram. As the rotating mirrors are the only moving elements in this spectrometer, the parallelism of the rotating mirrors and the vibration during the scan are analyzed. The vibration of the parallel mirrors is the main error during the rotation. This high stability and ultra-rapid scanning Fourier transform infrared spectrometer is a suitable candidate for airborne and space-borne remote sensing spectrometer.

Imaging spectral is a novel detection approach which simultaneously acquires two-dimensional visual picture and
one-dimensional spectral information.The imaging spectrometer not only provides abundant data for aeronautics and
astronautics remote sensing, but also offers promising applications on biomedical imaging, conservation and identification
of art works,surveillance of food safety,prevention and control of plant diseases and elimination of pests,and so forth. In
this paper, the snapshot imaging spectrometer using image replication based on Wollaston prisms is designed. This system
includes the telescope objective, the collimator lens, the wave plates, Wollaston prisms, and the imaging lens.The imaging
spectrometer system based on multi-configuration can obtain a high diffraction efficiency. Every configuration provide a
kind of wave. The 16 configurations are in one mechanical structure. The system’s MTF at 56 line pairs is better than 0.75.
The RMS of the spots are all in one pixel.The imaging spectrometer can obtain perfect data.

Coded aperture spectroscopy allows for sources of large field to be efficiently coupled into dispersive spectrometers by
replacing the traditional input slit with a patterned mask. Spectral calibration is requisite for spectroscopy to obtain the
spectrum information exactly. In this paper, we described the spectral calibration’s principle and methods of coded
aperture spectral imaging, and then gave the results of the experiment using a monochromatic extended source, at last we
tested the accuracy of spectral calibration. The results indicate that this method can calibrate the coded aperture imaging
spectrometer with high accuracy.

In many modern optical systems, the resolution is limited not only by the diffraction caused by physical dimensions of the optics lens, but also by the CCD’s nonzero pixel size. Especially for the traditional incoherent illumination, the restriction of CCD pixel is greater than that of optical diffraction. Here we develop a novel approach to enhancing resolution beyond the limit set by CCD’s pixels, in which a two-dimensional and orthogonal encoding mask is attached before the imaging lens to modulate frequency on input target spectrum. Here we focus on the design about a 4f optical imaging system, considering the ability of Fourier transformation to achieve the equivalent conversion between space and frequency domain. And to prevent the loss of frequency in the overlapping regions when sampled by classical CCD, there must be some proportion between the spatial range of object plane and corresponding frequency plane. Meaning while, the wavefront aberration of Fourier lens needs to be controlled to fulfill the mathematical features of Fourier transformation. We apply to improving and revising the theoretical design for the encoding mask based on the design limit of opticalmechanical engineering, and we analyze the different orthogonal forms of encoding masks which can bring the spectra diffraction to the imaging area. According to the theoretical discussion, revision and algorithm simulation, the results in the preliminary testing system show that the encoding mask can be used to produce enhancement of resolution by a factor of 2 in-exchange for decreasing the field of view by the same factor.

Coded aperture spectral imaging is a new system to captures multiframes images and reconstructs them into spectral
image cube based on compressive sensing theory (CS). However, using dynamic transformed coded aperture pattern can
cause two primary problems, firstly the whole exposure procedure needs to be staring on the same surface feature which
is depended on a high quality stable platform; secondly the coded aperture’s transformation might reduce the system’s
stability. To avoid these problems without a loss of information for precise reconstruction, in the paper we propose
dividing the single image panel into encoding spatial overlapped sub-districts. We design a pushbroom scan pattern to
ensure each sub-district have enough sampling measurements. In each sub-district, we infer its measurement matrix can
satisfy the sparsely requirements needed for accurate estimation and final reconstruction with CS sampling. Considering
with efficiency and accuracy, we design a orthogonal self-loop coding mask (lines irrelevant) to guarantee the coding are
irrelevant among distinct snapshot of the same scene. The simulation experiment reveals the design helping reconstruct
the scene spectral cube with high throughput and resolution.

With the development of mobile technologies and the integration with the spatial information technologies, it becomes
possible to provide a potential to develop new techno-support solutions to Epidemiological Field Investigation especially
for the disposal of emergent public health events. Based on mobile technologies and virtual geographic environment, the
authors have designed a model for collaborative work in four communication patterns, namely, S2S (Static to Static),
M2S (Mobile to Static), S2M (Static to Mobile), and M2M (Mobile to Mobile). Based on the model mentioned above,
this paper stresses to explore mobile online mapping regarding mobile collaboration and conducts an experimental case
study of HFRS (Hemorrhagic Fever with Renal Syndrome) fieldwork, and then develops a prototype system of emergent
response disposition information system to test the effectiveness and usefulness of field survey based on mobile
collaboration.

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